We manufacture our propeller shafts for you in accordance with the internationally established ISO 4566 standard using stainless steel grade 1.4571 or high-strength material grade 1.4462 duplex material. The shafts offered online here are manufactured with material grade 1.4462 as standard. This duplex material has very good tensile strength and surface hardness. The high-quality duplex material greatly reduces the torsion of the shaft and, due to the stronger properties of the material, a smaller shaft diameter can be installed if necessary. This is often the case with full or semi-planing motor yachts. On request, we also manufacture our shafts in 1.4571. This material also has excellent corrosion resistance and good running resistance in the shaft bearings. We currently offer our propeller shafts with feather key exclusively with the high-strength duplex material 1.4462 from ISO 25 to ISO 40 in lengths of 1000mm to 3000mm in our online store. If you are interested or have any questions about the shafts in material grade 1.4571 or other materials or variations from standard dimensions ( for example special cones, special threads, special lengths etc.) we can help you and will be happy to advise you. Every drive shaft leaves our workshop in perfect alignment. Further diameters & lengths in metric or inch, which are not listed, on request! Please call us (0471-77047) or send us an email (info@spw-gmbh.de) or contact form.